{
  "manageEntity": {
    "action": "Save",
    "entityId": "785327",
    "entityType": "Track",
    "nonce": "0xc42c169d613c44025917e82a15784f22f13ad1834faa76a4387771c7025b7413",
    "signature": "0x0e36296ce24abe5101713d7c6d029171f02e19e05546d4b7558b4f75b3f93ce7393bda7c3df0462ecbe68aa4b7e0b7ab6eeb6ddaa0b756a098f81166ee9263bf1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}